Simulation of partial discharge in helium filled elliptic cavity in dielectric

Partial discharge features in cavities in a condensed dielectric was studied. Two models for description of the electric charge transfer during partial discharge were used that are model of constant conductivity of a cavity and a diffusion-drift model. The numerical methods for both models were realized for parallel computations with GPU that accelerates the calculations significantly. The three-dimensional calculations of apparent and true charge in cavities of the shapes of different size spheres and prolate spheroid were conducted. The simulation of the initial stage of streamer development in elliptic helium filled cavity was performed.